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Eutropis nagarjuni (SHARMA, 1969)

IUCN Red List - Eutropis nagarjuni - Near Threatened, NT

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Higher TaxaScincidae, Mabuyinae, Scincoidea, Sauria, Squamata (lizards)
Subspecies 
Common NamesE: Nagarjuni lizard, Sharma's Mabuya 
SynonymMabuya nagarjuni SHARMA 1969
Mabuya nagarjuni — SHARMA 1971
Mabuya nagarjuni — DAS 1996: 47
Eutropis nagarjuni — MAUSFELD et al. 2002
Eutropis nagarjunensis — AMARASINGHE et al. 2016
Eutropis nagarjunensis — AMARASINGHE et al. 2021
Eutropis nagarjuni — CHAPPLE et al. 2021 
DistributionIndia (Andhra Pradesh)

Type locality: "Vijaypuri South, near right-bank of R. Krishna, lat. 16°35’N., long. 79°28’E., elevation 500 ft." (in Andhra Pradesh, south-eastern India).  
Reproduction 
TypesHolotype: ZSI 21170; ZSI 21171 (paratype) 
DiagnosisDiagnosis: SVL to 51 mm; prefrontals not in contact with each other; three pairs of nuchals and postnasals present and labial; and gular regions not flame scarlet (from DAS et al. 2008). Extended diagnosis in Srinivasulu et al. (2005). See also diagnosis in Sharma 1971: 84.

Diagnosis. The following combination of characters distinguishes Eutropis nagarjunensis from all other Indian congeners: two dark paravertebral bands on the back, undivided lower-eyelid disc, single postnasal, 33–35 midbody scale rows, 41 paravertebral scale rows, 51 ventrals, five keels on dorsal scales, 21–24 subdigital lamellae under fourth toe, two long and one short pre-auricular lobule on each anterior tympanum, prefrontals slightly separated, two pairs of large nuchals [AMARASINGHE et al. 2016: 160] 
CommentNot listed, at least as such, in the Zoological Record of 1969. 
EtymologyIn the original description, Sharma (1969) did not mention the reason he gave the species epithet as “nagarjuni”. It could be that he wanted to honour a person (male) called “Nagarjun”. However, Sharma (1971) in his publication “The reptile fauna of the Nagarjunasagar Dam Area (Andhra Pradesh, India)” clearly stated the distribution of this species as the “Nagarjunasagar Area”. Therefore, Amarasinghe inferred that Sharma (1969) intended to name his species epithet as a toponym, but mistakenly named it as a patronym. Therefore, they corrected the species epithet as a participle adding the genitive termination “–ensis” to the stem of the name (i.e. Nagarjun) according to the generic name (i.e. Eutropis) which is feminine (Amarasinghe et al. 2016). However, the emendation by Amarasinghe et al is incorrect. Specific epithets based on place names can be either nouns in apposition, or adjectives, and there is no requirement that the termination of adjectival forms has to be -ensis/ense. In this case, it is apparent that nagarjuni is a noun in apposition, and attempting to transform it into an adjectival form is incorrect. So this falls under the case of an unjustified emendation (Glenn Shea, pers. comm., 9 May 2021). 
References
  • AMARASINGHE, A. T., GANESH, S., PATEL, H., DEUTI, K., CAMPBELL, P. D., PALOT, M. J., ... & SUPRIATNA, J. 2021. Taxonomy and predicted distribution of a rare Indian skink, Eutropis innotata (Blanford, 1870)(Reptilia: Scincidae) with the redescription of its holotype. Zootaxa 4981(3), 577-592 - get paper here
  • Amarasinghe, A.A. THASUN.; PATRICK D. CAMPBELL, S.R. CHANDRAMOULI, KAUSHIK DEUTI, SUJOY RAHA, D.M.S. SURANJAN KARUNARATHNA, IVAN INEICH 2016. Taxonomy of two endemic Indian skinks, Eutropis bibronii (Gray, 1838) and E. nagarjunensis (Sharma, 1969) (Reptilia: Scincidae), including redescriptions of their types. Zootaxa 4154 (2): 155–168 - get paper here
  • Das I. 1991. A new species of Mabuya from Tamil Nadu State, Southern India (Squamata: Scincidae). Journal of Herpetology 25 (3): 342-344. - get paper here
  • Das, Indraneil; de Silva, Anslem; Austin, Christopher C. 2008. A new species of Eutropis (Squamata: Scincidae) from Sri Lanka. Zootaxa 1700: 35-52 - get paper here
  • Sharma, R.C. 1969. Two new izards of the genera Mabuya Fitzinger and Riopa Gray (Scincidae) from India. Bull. Systematic Zool. (Calcutta) 1 (2): 71-75
  • Sharma, R.C. 1971. The reptile fauna of the Nagarjunasagar Dam area (Andhra Pradesh, India). Records Zool. Survey India 63: 77–93 [1965] - get paper here
  • Srinivasulu, C. & Das, I. 2007. REDISCOVERY OF THE MISSING SYNTYPES OF MABUYA NAGARJUNI SHARMA 1969 (REPTILIA: SCINCIDAE) IN THE COLLECTION OF THE ZOOLOGICAL SURVEY OF INDIA. J. Bombay Nat. Hist. Soc. 104 (2): 25-26 - get paper here
  • Srinivasulu, C.; Bhargavi Srinivasulu and C.A.N. Rao 2005. Present status of Eutropis nagarjuni (Sharma, 1969) (Reptilia: Scincidae) - an endemic skink from Andhra Pradesh, India. ZOOS' PRINT JOURNAL 20 (5): 1865-1866 - get paper here
  • Venugopal, P.D. 2010. An updated and annotated list of Indian lizards (Reptilia: Sauria) based on a review of distribution records and checklists of Indian reptiles. Journal of Threatened Taxa 2 (3): 725-738. - get paper here
 
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